 |
| copper-oxide: 74 phrases in 21 subjects |
| Astronautics | 3 |
| Automated equipment | 1 |
| Chemistry | 4 |
| Ecology | 12 |
| Electrochemistry | 3 |
| Electronics | 8 |
| General | 1 |
| Geology | 4 |
| High energy physics | 1 |
| High frequency electronics | 2 |
| Makarov | 10 |
| Metallurgy | 3 |
| Military | 1 |
| Nanotechnology | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 2 |
| Physics | 3 |
| Rail transport | 1 |
| Technology | 10 |
| Telecommunications | 1 |
| Textile industry | 2 |